53 lines
1.3 KiB
C#
53 lines
1.3 KiB
C#
using Sanchime.Functional.Products;
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using Sanchime.Functional.Extensions;
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using Sanchime.Toolkits;
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// Test<int> test = new Test<int>();
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// Console.WriteLine(test.Map((Test<int> x) => {x.Value = 2; return x;}).Value);
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// Console.WriteLine(test.Value);
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// foo(10);
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// foo(Option.None);
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// void foo(Option<int> option)
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// {
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// var res = option.Map(x => x + 2);
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// res.WriteLine();
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// }
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// Option.Some(1).Map(x => (float)x + 1.2).Map(x => x.ToString()).Map(x => x.GetType().Name).WriteLine();
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// 测试Option的Bind
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var parse = (string s) => Int32.TryParse(s, out int i) ? Option.Some(i) : Option.None;
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var foo = (string s) => s.Pipe(parse).Bind(Age.Of);
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foo("111").WriteLine();
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foo("aaa").WriteLine();
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foo("123").WriteLine();
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// 管道
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foo("1ab").Pipe(x => Console.WriteLine(x));
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public struct Age
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{
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private int _value;
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public static Option<Age> Of(int age)
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=> IsValid(age) ? Option.Some(new Age(age)) : Option.None;
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private Age(int age)
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{
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if (!IsValid(age))
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{
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throw new ArgumentException("输入的年龄是无效的");
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}
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_value = age;
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}
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private static bool IsValid(int age)
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=> age is (>= 0 and <= 150);
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public override string ToString()
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=> _value.ToString();
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}
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